Effects of gamma irradiation on optical and structural properties of PbO–Bi2O3–B2O3 glasses

Sharma, G.; Singh, Kulwant; Manupriya, _; Mohan, S.; Singh, Harvinder; Bindra, Sukhleen

doi:10.1016/j.radphyschem.2006.02.008

Cited by 145 publications

(41 citation statements)

References 31 publications

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“…For the amorphous materials, the values of the band gap energy are above 3 eV independent of the transition types [29]. Our measured direct and indirect transition values exhibit more than 3 eV, confirming the amorphous nature of the glass specimen and this increasing of band gap energy is resulting in decreasing of non-bridging oxygen atoms in the glassy matrix [30,31]. The increasing band gap can be attributed that there is an increasing number of energetic electrons in the glass network with increasing of borate content.…”

Section: -2234supporting

confidence: 69%

Structural Elucidation of Borate Glasses by Spectroscopic and SEM Studies

Thirumaran¹,

Priyadharsini²

2018

Asian J. Chem.

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Glass samples of composition (B2O3-WO3-Bi2O3) BTB glass systems and (B2O3-SiO2-Bi2O3) BSB glass systems with ranging from 2 mol % are prepared by melt quenching technique. The structural analysis of glasses is analyzed by Fourier-transform infrared, UV-visible and scanning electron microscopy studies. The FTIR spectrum identifies the broad absorption bands indicated the wide distribution of borate structural units. The UV-visible study observes the increasing band gap energies of glass specimen suggesting their nature of rigidity. The surface morphological aspects of the prepared glass samples are examined by scanning electron microscopy study.

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Section: -2234supporting

confidence: 69%

Structural Elucidation of Borate Glasses by Spectroscopic and SEM Studies

Thirumaran¹,

Priyadharsini²

2018

Asian J. Chem.

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“…With addition of lead oxide, the band shifted towards higher wavenumber side. An absorption band between wavenumber 2867 and 2943 cm −1 , and it occurs due to hydrogen bonding [81]. This absorption band disappears in IR spectra when lead content increased to 40%.…”

Section: Barium Strontium Titanate Borosilicate Glassesmentioning

confidence: 99%

A Review on Infrared Spectroscopy of Borate Glasses with Effects of Different Additives

2012

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Borate glasses are the technologically important class of glasses and play a significant role in various applications. Borate glasses contain planar BO 3 groups as structural units, rather than tetrahedral SiO 4 groups. The oxygen atoms are, as in SiO 2 , again connected to two network-forming atoms, in case of boron. The radial distribution analysis describes the B 2 O 3 glass structure as consisting of boroxol rings, that is, planar rings containing three boron atoms and three oxygen atoms. The network forming of the B 2 O 3 and the SiO 4 is affected with the addition of some metal cation additives Pb, Zn, Cd, and so forth. These additives also work as a network modifier and a nucleating agent for crystallization of glass. Therefore, the optical properties of the borate glasses have been changed significantly.

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“…Fig.3.The broadening of the IR-spectra indicates that there is no detectable variation in peak position to crystallization. The bands observed around 1348 cm -1 corresponds to B-O bond stretching vibrations of trigonal units [17] whereas the band around 1003 cm -1 [18] is assigned as B-O bond stretching vibrations of BO 4 units and the band around 710 cm -1 is assigned to the bending vibrations of B-O-B linkages [19].…”

Section: Sem Analysismentioning

confidence: 99%